Solving nonlinear ODEs with the ultraspherical spectral method

O Qin, K Xu - IMA Journal of Numerical Analysis, 2024 - academic.oup.com
We extend the ultraspherical spectral method to solving nonlinear ordinary differential
equation (ODE) boundary value problems. Naive ultraspherical Newton implementations …

Computing equilibrium measures with power law kernels

T Gutleb, J Carrillo, S Olver - Mathematics of Computation, 2022 - ams.org
We introduce a method to numerically compute equilibrium measures for problems with
attractive-repulsive power law kernels of the form $ K (xy)=\frac {| xy|^\alpha}{\alpha}-\frac …

Numerical solution of fractional order fredholm integro-differential equations by spectral method with fractional basis functions

Y Talaei, S Noeiaghdam, H Hosseinzadeh - Известия Иркутского …, 2023 - mathnet.ru
This paper introduces a new numerical technique based on the implicit spectral collocation
method and the fractional Chelyshkov basis functions for solving the fractional Fredholm …

Spectral approximation of convolution operators of Fredholm type

X Liu, K Deng, K Xu - arXiv preprint arXiv:2405.08598, 2024 - arxiv.org
We have developed a method for constructing spectral approximations for convolution
operators of Fredholm type. The algorithm we propose is numerically stable and takes …

A fast sparse spectral method for nonlinear integro-differential Volterra equations with general kernels

TS Gutleb - Advances in Computational Mathematics, 2021 - Springer
We present a sparse spectral method for nonlinear integro-differential Volterra equations
based on the Volterra operator's banded sparsity structure when acting on specific Jacobi …

A sparse spectral method for Volterra integral equations using orthogonal polynomials on the triangle

TS Gutleb, S Olver - SIAM Journal on Numerical Analysis, 2020 - SIAM
We introduce and analyze a sparse spectral method for the solution of Volterra integral
equations using bivariate orthogonal polynomials on a triangle domain. The sparsity of the …

[HTML][HTML] A static memory sparse spectral method for time-fractional PDEs

TS Gutleb, JA Carrillo - Journal of Computational Physics, 2023 - Elsevier
We discuss a method which provides accurate numerical solutions to fractional-in-time
partial differential equations posed on [0, T]× Ω with Ω⊂ R d without the excessive memory …

Numerical solution of fractional Fredholm integro-differential equations by spectral method with fractional basis functions

Y Talaei, S Noeiaghdam, H Hosseinzadeh - arXiv preprint arXiv …, 2022 - arxiv.org
This paper presents an efficient spectral method for solving the fractional Fredholm integro-
differential equations. The non-smoothness of the solutions to such problems leads to the …

Convergence analysis of a Legendre spectral collocation method for nonlinear Fredholm integral equations in multidimensions

MA Zaky, AS Hendy - Mathematical Methods in the Applied …, 2024 - Wiley Online Library
It is a very challenging task to solve a nonlinear integral equation in multidimensions. The
main purpose of this paper is to develop and analyze a spectral collocation method for a …

[PDF][PDF] Legendre spectral collocation method for solving nonlinear fractional Fredholm integro-differential equations with convergence analysis

AH Tedjani, AZ Amin, AH Abdel-Aty… - AIMS …, 2024 - aimspress.com
The main purpose of this work was to develop a spectrally accurate collocation method for
solving nonlinear fractional Fredholm integro-differential equations (non-FFIDEs). A …